board/digsy_mtc/digsy_mtc.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2003
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
  *
  * (C) Copyright 2005-2009
  * Modified for InterControl digsyMTC MPC5200 board by
  * Frank Bodammer, GCD Hard- & Software GmbH,
  *                 frank.bodammer@gcd-solutions.de
  *
  * (C) Copyright 2009
  * Grzegorz Bernacki, Semihalf, gjb@semihalf.com
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */

 #include <common.h>
 #include <mpc5xxx.h>
 #include <net.h>
 #include <pci.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 #include "eeprom.h"
 #include "is42s16800a-7t.h"

 DECLARE_GLOBAL_DATA_PTR;

 extern int usb_cpu_init(void);

 #ifndef CONFIG_SYS_RAMBOOT
 static void sdram_start(int hi_addr)
 {
 	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
 	long control = SDRAM_CONTROL | hi_addr_bit;

 	/* unlock mode register */
 	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);

 	/* precharge all banks */
 	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);

 	/* auto refresh */
 	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);

 	/* set mode register */
 	out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);

 	/* normal operation */
 	out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
 }
 #endif

 /*
  * ATTENTION: Although partially referenced initdram does NOT make real use
  *            use of CONFIG_SYS_SDRAM_BASE. The code does not work if
  *            CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
  */

 phys_size_t initdram(int board_type)
 {
 	ulong dramsize = 0;
 	ulong dramsize2 = 0;
 	uint svr, pvr;
 #ifndef CONFIG_SYS_RAMBOOT
 	ulong test1, test2;

 	/* setup SDRAM chip selects */
 	out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001C); /* 512MB at 0x0 */
 	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */

 	/* setup config registers */
 	out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
 	out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);

 	/* find RAM size using SDRAM CS0 only */
 	sdram_start(0);
 	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
 	sdram_start(1);
 	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize = test1;
 	} else {
 		dramsize = test2;
 	}

 	/* memory smaller than 1MB is impossible */
 	if (dramsize < (1 << 20))
 		dramsize = 0;

 	/* set SDRAM CS0 size according to the amount of RAM found */
 	if (dramsize > 0) {
 		out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
 			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
 	} else {
 		out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
 	}

 	/* let SDRAM CS1 start right after CS0 */
 	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C);

 	/* find RAM size using SDRAM CS1 only */
 	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize),
 			0x08000000);
 		dramsize2 = test1;

 	/* memory smaller than 1MB is impossible */
 	if (dramsize2 < (1 << 20))
 		dramsize2 = 0;

 	/* set SDRAM CS1 size according to the amount of RAM found */
 	if (dramsize2 > 0) {
 		out_be32((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize |
 			(0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
 	} else {
 		out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
 	}

 #else /* CONFIG_SYS_RAMBOOT */

 	/* retrieve size of memory connected to SDRAM CS0 */
 	dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
 	if (dramsize >= 0x13)
 		dramsize = (1 << (dramsize - 0x13)) << 20;
 	else
 		dramsize = 0;

 	/* retrieve size of memory connected to SDRAM CS1 */
 	dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
 	if (dramsize2 >= 0x13)
 		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
 	else
 		dramsize2 = 0;

 #endif /* CONFIG_SYS_RAMBOOT */

 	/*
 	 * On MPC5200B we need to set the special configuration delay in the
 	 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
 	 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
 	 *
 	 * "The SDelay should be written to a value of 0x00000004. It is
 	 * required to account for changes caused by normal wafer processing
 	 * parameters."
 	 */
 	svr = get_svr();
 	pvr = get_pvr();
 	if ((SVR_MJREV(svr) >= 2) &&
 	    (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4))
 		out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);

 	return dramsize + dramsize2;
 }

 int checkboard(void)
 {
 	char *s = getenv("serial#");

 	puts ("Board: InterControl digsyMTC");
 	if (s != NULL) {
 		puts(", ");
 		puts(s);
 	}
 	putc('\n');

 	return 0;
 }

 int board_early_init_r(void)
 {
 #ifdef CONFIG_MPC52XX_SPI
 	struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt*)MPC5XXX_GPT;
 #endif
 	/*
 	 * Now, when we are in RAM, enable flash write access for detection
 	 * process.  Note that CS_BOOT cannot be cleared when executing in
 	 * flash.
 	 */
 	/* disable CS_BOOT */
 	clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25));
 	/* enable CS1 */
 	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17));
 	/* enable CS0 */
 	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16));

 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
 	/* Low level USB init, required for proper kernel operation */
 	usb_cpu_init();
 #endif
 #ifdef CONFIG_MPC52XX_SPI
 	/* GPT 6 Output Enable */
 	out_be32(&gpt[6].emsr, 0x00000034);
 	/* GPT 7 Output Enable */
 	out_be32(&gpt[7].emsr, 0x00000034);
 #endif

 	return (0);
 }

 void board_get_enetaddr (uchar * enet)
 {
 	ushort read = 0;
 	ushort addr_of_eth_addr = 0;
 	ushort len_sys = 0;
 	ushort len_sys_cfg = 0;

 	/* check identification word */
 	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2);
 	if (read != EEPROM_IDENT)
 		return;

 	/* calculate offset of config area */
 	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2);
 	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG,
 		(uchar *)&len_sys_cfg, 2);
 	addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1;
 	if (addr_of_eth_addr >= EEPROM_LEN)
 		return;

 	eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6);
 }

 int misc_init_r(void)
 {
 	uchar enetaddr[6];

 	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
 		board_get_enetaddr(enetaddr);
 		eth_setenv_enetaddr("ethaddr", enetaddr);
 	}

 	return 0;
 }

 #ifdef CONFIG_PCI
 static struct pci_controller hose;

 extern void pci_mpc5xxx_init(struct pci_controller *);

 void pci_init_board(void)
 {
 	pci_mpc5xxx_init(&hose);
 }
 #endif

 #ifdef CONFIG_CMD_IDE

 #ifdef CONFIG_IDE_RESET

 void init_ide_reset(void)
 {
 	debug ("init_ide_reset\n");

 	/* set gpio output value to 1 */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
 	/* open drain output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
 	/* direction output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
 	/* enable gpio */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

 }

 void ide_set_reset(int idereset)
 {
 	debug ("ide_reset(%d)\n", idereset);

 	/* set gpio output value to 0 */
 	clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
 	/* open drain output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
 	/* direction output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
 	/* enable gpio */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

 	udelay(10000);

 	/* set gpio output value to 1 */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
 	/* open drain output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
 	/* direction output */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
 	/* enable gpio */
 	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
 }
 #endif /* CONFIG_IDE_RESET */

 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 void ft_board_setup(void *blob, bd_t *bd)
 {
 	ft_cpu_setup(blob, bd);
 }
 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

 #endif /* CONFIG_CMD_IDE */
	/*
	* (C) Copyright 2003
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* (C) Copyright 2004
	* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
	*
	* (C) Copyright 2005-2009
	* Modified for InterControl digsyMTC MPC5200 board by
	* Frank Bodammer, GCD Hard- & Software GmbH,
	* frank.bodammer@gcd-solutions.de
	*
	* (C) Copyright 2009
	* Grzegorz Bernacki, Semihalf, gjb@semihalf.com
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/

	#include <common.h>
	#include <mpc5xxx.h>
	#include <net.h>
	#include <pci.h>
	#include <asm/processor.h>
	#include <asm/io.h>
	#include "eeprom.h"
	#include "is42s16800a-7t.h"

	DECLARE_GLOBAL_DATA_PTR;

	extern int usb_cpu_init(void);

	#ifndef CONFIG_SYS_RAMBOOT
	static void sdram_start(int hi_addr)
	{
	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
	long control = SDRAM_CONTROL \| hi_addr_bit;

	/* unlock mode register */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control \| 0x80000000);

	/* precharge all banks */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control \| 0x80000002);

	/* auto refresh */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control \| 0x80000004);

	/* set mode register */
	out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);

	/* normal operation */
	out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
	}
	#endif

	/*
	* ATTENTION: Although partially referenced initdram does NOT make real use
	* use of CONFIG_SYS_SDRAM_BASE. The code does not work if
	* CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
	*/

	phys_size_t initdram(int board_type)
	{
	ulong dramsize = 0;
	ulong dramsize2 = 0;
	uint svr, pvr;
	#ifndef CONFIG_SYS_RAMBOOT
	ulong test1, test2;

	/* setup SDRAM chip selects */
	out_be32((void )MPC5XXX_SDRAM_CS0CFG, 0x0000001C); / 512MB at 0x0 */
	out_be32((void )MPC5XXX_SDRAM_CS1CFG, 0x80000000); / disabled */

	/* setup config registers */
	out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
	out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);

	/* find RAM size using SDRAM CS0 only */
	sdram_start(0);
	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
	sdram_start(1);
	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
	if (test1 > test2) {
	sdram_start(0);
	dramsize = test1;
	} else {
	dramsize = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize < (1 << 20))
	dramsize = 0;

	/* set SDRAM CS0 size according to the amount of RAM found */
	if (dramsize > 0) {
	out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
	(0x13 + __builtin_ffs(dramsize >> 20) - 1));
	} else {
	out_be32((void )MPC5XXX_SDRAM_CS0CFG, 0); / disabled */
	}

	/* let SDRAM CS1 start right after CS0 */
	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C);

	/* find RAM size using SDRAM CS1 only */
	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize),
	0x08000000);
	dramsize2 = test1;

	/* memory smaller than 1MB is impossible */
	if (dramsize2 < (1 << 20))
	dramsize2 = 0;

	/* set SDRAM CS1 size according to the amount of RAM found */
	if (dramsize2 > 0) {
	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize \|
	(0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
	} else {
	out_be32((void )MPC5XXX_SDRAM_CS1CFG, dramsize); / disabled */
	}

	#else /* CONFIG_SYS_RAMBOOT */

	/* retrieve size of memory connected to SDRAM CS0 */
	dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
	if (dramsize >= 0x13)
	dramsize = (1 << (dramsize - 0x13)) << 20;
	else
	dramsize = 0;

	/* retrieve size of memory connected to SDRAM CS1 */
	dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
	if (dramsize2 >= 0x13)
	dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
	else
	dramsize2 = 0;

	#endif /* CONFIG_SYS_RAMBOOT */

	/*
	* On MPC5200B we need to set the special configuration delay in the
	* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
	* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
	*
	* "The SDelay should be written to a value of 0x00000004. It is
	* required to account for changes caused by normal wafer processing
	* parameters."
	*/
	svr = get_svr();
	pvr = get_pvr();
	if ((SVR_MJREV(svr) >= 2) &&
	(PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4))
	out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);

	return dramsize + dramsize2;
	}

	int checkboard(void)
	{
	char *s = getenv("serial#");

	puts ("Board: InterControl digsyMTC");
	if (s != NULL) {
	puts(", ");
	puts(s);
	}
	putc('\n');

	return 0;
	}

	int board_early_init_r(void)
	{
	#ifdef CONFIG_MPC52XX_SPI
	struct mpc5xxx_gpt gpt = (struct mpc5xxx_gpt)MPC5XXX_GPT;
	#endif
	/*
	* Now, when we are in RAM, enable flash write access for detection
	* process. Note that CS_BOOT cannot be cleared when executing in
	* flash.
	*/
	/* disable CS_BOOT */
	clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25));
	/* enable CS1 */
	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17));
	/* enable CS0 */
	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16));

	#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
	/* Low level USB init, required for proper kernel operation */
	usb_cpu_init();
	#endif
	#ifdef CONFIG_MPC52XX_SPI
	/* GPT 6 Output Enable */
	out_be32(&gpt[6].emsr, 0x00000034);
	/* GPT 7 Output Enable */
	out_be32(&gpt[7].emsr, 0x00000034);
	#endif

	return (0);
	}

	void board_get_enetaddr (uchar * enet)
	{
	ushort read = 0;
	ushort addr_of_eth_addr = 0;
	ushort len_sys = 0;
	ushort len_sys_cfg = 0;

	/* check identification word */
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2);
	if (read != EEPROM_IDENT)
	return;

	/* calculate offset of config area */
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2);
	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG,
	(uchar *)&len_sys_cfg, 2);
	addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1;
	if (addr_of_eth_addr >= EEPROM_LEN)
	return;

	eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6);
	}

	int misc_init_r(void)
	{
	uchar enetaddr[6];

	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
	board_get_enetaddr(enetaddr);
	eth_setenv_enetaddr("ethaddr", enetaddr);
	}

	return 0;
	}

	#ifdef CONFIG_PCI
	static struct pci_controller hose;

	extern void pci_mpc5xxx_init(struct pci_controller *);

	void pci_init_board(void)
	{
	pci_mpc5xxx_init(&hose);
	}
	#endif

	#ifdef CONFIG_CMD_IDE

	#ifdef CONFIG_IDE_RESET

	void init_ide_reset(void)
	{
	debug ("init_ide_reset\n");

	/* set gpio output value to 1 */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

	}

	void ide_set_reset(int idereset)
	{
	debug ("ide_reset(%d)\n", idereset);

	/* set gpio output value to 0 */
	clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));

	udelay(10000);

	/* set gpio output value to 1 */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
	/* open drain output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
	/* direction output */
	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
	/* enable gpio */
	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
	}
	#endif /* CONFIG_IDE_RESET */

	#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
	void ft_board_setup(void blob, bd_t bd)
	{
	ft_cpu_setup(blob, bd);
	}
	#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

	#endif /* CONFIG_CMD_IDE */